Air purifier filter: need to be selected according to the type of pollutant.Home air purifier Mercha

　　Strictly speaking, the traditional central fresh air system is an imported product, and its application in European and American countries is quite common. However, unlike in China, the main function of the fresh air system installed by them is to ventilate, and by the way, to coarsely filter large particles such as pollen. In the face of severe pollution in my country, coarse filtration is not enough. Therefore, the wall-mounted fresh air system has multiple layers of different types of filters inside to filter different pollutants.

　　Indoor pollutants are not only as simple as PM2.5

　　Although particulate matter represented by PM2.5 is the recognized culprit of indoor air pollution, the pollutants that pose a threat to our respiratory health are far more than particulate matter. Formaldehyde, ozone, allergens, bacteria and viruses are all floating in the air at all times. Among them, the threat level is greater than that of particulate matter.

　　Therefore, when purchasing wall-mounted fresh air products, it is also necessary to consider the existence of such pollutants. Taking formaldehyde as an example, its release cycle is quite long, up to ten years. In addition to ensuring ventilation, the adsorption of activated carbon can also effectively remove formaldehyde. At present, TVOC filters have been added to some wall-mounted fresh air systems, which can effectively absorb gaseous pollutants such as formaldehyde while ventilating the room.

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